No recovery or download - Samsung Galaxy S7 Edge Questions and Answers

My s7 edge can not get into dl or recovery mode. The screen flashes uncontrollably on everything but the initial startup screen and always on mode. Odin recognizes it but of course without dl Mode it fails.
Any ideas?

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[Q] Not Able to enter Recovery Mode

I have a SM-N9005 (on 4.4.2) which is facing boot loops (doesn't pass the animated Samsung logo). Tried to enter recovery mode but it reboots after a few seconds after seeing the blue recovery booting wordings.
I am able to enter to download mode and managed to successfully flash the stock firmware (from samfirmware.com) using ODIN 3.09. Phone reboots after ODIN finishes flashing and tries to enter recovery mode but it fails as per before.
Tried to root using CF-Auto-Root and tried to use TWRP or CWM recovery modules but unable to boot up to these modules as well.
Any other ideas guys?

Can't Enter Recovery Mode

I am getting a System UI has stopped working error, so after looking around I founded out that I have to do a factory reset. But whenever I try to enter Recovery Mode, I see the blue text that usually signals entering Recovery Mode but then it disappears and it redirects me to the Downloading Screen where it says "Could not do normal boot, ODIN Mode." My phone is Samsung Galaxy s5

T560NU - Weird download mode, boots to recovery automatically

Hello! So I 'm trying to get Lineage on my tab here, and of course you must install TWRP to do so, but after following tutorials and such with ODIN on how to do it, it finally boots back up into stock recovery. I try booting back up into Android but no luck, it just boots back into recovery. I tried going into download mode and flashing again, but it doesn't return with the normal light blue 'Downloading' screen, it shows the initial boot image with text in the corner, similar to normal download mode, says system status / current binary = custom, FRP lock off, etc. I plugged in to ODIN but it doesn't show up, neither when using plain old 'adb devices'. I've had some luck though, i can flash using adb sideload, or from an SD card via recovery mode, but nothing works since they're not signed apparently? Please someone help me if you can, im looking to use this as my daily driver mobile computer, since my laptop has a screen problem. Thanks in advance!
-xxpxl
Pixel 2 XL, Samsung Galaxy Tab E 9.6 (SM-T560NU)

Reboot loop TWRP

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I recently wanted put FloydRom onto my S7 edge. I've done this several times before, but this time my home button wasn't working. I used adb reboot download to go into odin mode, flashed twrp but now can't switch from odin to recovery because my home button doesn't work. Any suggestions are appreciated

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